/// <summary>
/// Starts the search.
/// </summary>
private void Search()
{
_files = new List <string>();
foreach (var paths in _paths)
{
_cts.Token.ThrowIfCancellationRequested();
DriveInfo drive = null;
if (paths.Key != string.Empty)
{
try
{
drive = new DriveInfo(paths.Key);
var s = drive.AvailableFreeSpace; // make sure disk is ready
}
catch (DriveNotFoundException) { continue; }
catch (IOException) { continue; }
catch (Exception ex)
{
MainWindow.HandleUnexpectedException(ex);
}
}
if (drive != null && drive.DriveFormat == "NTFS" && Settings.Get <bool>("Search NTFS MFT records") && Utils.IsAdmin)
{
try
{
ScanNtfsMftForFile(drive, paths.Value.Count == 1 && paths.Value[0].Length == 3 ? null : paths.Value);
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
MainWindow.HandleUnexpectedException(ex);
}
}
else
{
foreach (var path in paths.Value)
{
FileSearchProgressChanged.Fire(this, "Searching recursively for matching files in " + path + "...");
ScanDirectoryForFile(path);
}
}
}
FileSearchDone.Fire(this, _files);
}
/// <summary>
/// Scans the NTFS Master File Table entries for a matching file.
/// </summary>
/// <param name="drive">The partition to scan.</param>
/// <param name="paths">The paths to which the search should be limited.</param>
private void ScanNtfsMftForFile(DriveInfo drive, IEnumerable <string> paths = null)
{
FileSearchProgressChanged.Fire(this, "Reading the MFT records of the " + drive.Name[0] + " partition...");
IEnumerable <string> list;
Log.Debug("Reading the MFT records of the " + drive.Name[0] + " partition...");
try
{
_cts.Token.ThrowIfCancellationRequested();
var usn = new NtfsUsnJournal(drive);
_cts.Token.ThrowIfCancellationRequested();
list = usn.GetParsedPaths(ShowNames.Regexes.KnownVideo, paths);
_cts.Token.ThrowIfCancellationRequested();
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
Log.Error("Error while reading the MFT records of the " + drive.Name[0] + " partition.", ex);
return;
}
FileSearchProgressChanged.Fire(this, "Searching for matching files in the " + drive.Name[0] + " partition...");
foreach (var file in list)
{
_cts.Token.ThrowIfCancellationRequested();
try
{
if (_checkFile(file))
{
_files.Add(file);
}
}
catch (PathTooLongException) { }
catch (SecurityException) { }
catch (UnauthorizedAccessException) { }
catch (DirectoryNotFoundException) { }
catch (Exception ex)
{
Log.Error("Error while checking file.", ex);
}
}
}
